Steam-trap.



`. 0 mw 7 2 V. 0 N d e .m e t a P Y. Dn A M T. S J. ...L 5 51 2 6 6 m .N

S T E A l'll T H A P. (Application led Aug. 9, 1900.)

(Ilo'lodel.)

l .I r

Fig?

` ATTORNEYS.

W/TNESSES UNITED STATES l1 Tricia.

JOSEPH ST. MARY, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO GEORGE M.MAHONEY, OF SAME PLACE.

SPECIFICATION forming `part of Letters Patent No. 662,552, datedNovember 2'7, 1900'.

Application filed August 9, 1900. Serial No. 26,391. (No model.)

To all, whom, it may concern:

Be it known that I, JOSEPH ST. MARY, a citizen of the United States ofAmerica, residing at San Francisco, county of San Francisco, and Stateof California, have invented certain new and useful Improvements inSteam-Traps; and I hereby declare the following to be a full, clear, andeXact descrip-` tion of the same, reference being had to theaccompanying drawings, forming a part of this specification.

This invention relates to traps for collecting and discharging atintervals Water of condensation from steam pipes or vessels and tocertain improvementsiin such traps.

The invention consists in a main containing vessel and therein anopen-mouthed doat mounted or poised on a coiled resilient pipe thatperforms the function of sustaining and guiding the float and also thatof a conduit for the water of condensation that passes into the floatvessel, which water rises to some predetermined point therein and untilthe Weight of this water depresses the fioat, thereby opening a valve inits bottom, permitting the water in the float to escape at intervals, asis desirable in such apparatus.

The objects of this invention are to provide rin a steam-trap an openfloat vessel that will move without friction or rubbing .contact of anykind, to attain the desired operating functions without any loosemembers within the main containing vessel, to provide a valve,`

Fig. I on the line 00 00.

The operation of' my improved steam-trap is exceedingly simple, thefloat vessel being the only moving part, and this without slidingbearings or movable joints of any kind.

The main containing vessel A is a plain cyl- To these ends I constructsteam-V Fig. II is a vertical section inder, with a removable cover Battached to a flange C on the main vessel in the usual manner. In thiscovering-plate B is an inletway at D, through which steam and water ofcondensation enter by means of a pipe D, connecting to heating or othersteam apparatus to be drained.

On the inside of the cover B is provided a passage E, by which theentering water is caused to fall within the'annular space F around thefloat vessel G. This float vessel Gr, as seen in Fig. II, is a plaincylinder open at the top, consequently is not subjected to pressure, andcan be made thin and light in weight-,and is thus adapted for highpressu res. This float vessel Gr is mounted lon and rigidly attached toa resilient coiled pipe H, as seen in Fig. II, that is in turn rigidlyattached to a fiange I and connects with a discharge-pipe J, throughwhich waterof condensation is discharged.

The coiled pipe H communicates with the interior of the float vessel G,as seen in Fig. II, through a passage K, which passage is opened andclosed by a pointed valve L, formed on the end of the rod M. This rod Mpasses upward through the cover B and is screw-threaded therein, so asto be vertically adjustable from the outside of the main vessel when thetrap is in operation, a jam-nut N preventing the rod from turning afteradjustment is made. The stem is slotted at the top, as shown in Fig. II,to receive a screwdriver, or can be squared to receive a socketkey. Ioprevent the possible escape of steam around the screw-threaded portionof the stem M, I provide a hollow nipple O, closed by a commonscrew-plug P. To permit the stem some freedom of movement laterally, sothe valve-point L will settle fairly on its seat, I separate the sterninto two parts and connect these parts by a sleeve Q, held bycross-pins, as seen in Fig. II. The bore of this sleeve being alittlelarger than the diameter of the stem M permits the required lateraladjustment of the latter to its seat.

The operation is as follows: The pipe D being connected to steamapparatus of any kind to be drained, the main vessel A is lled withwater up to or near the top of the float vessel G, so its buoyancy willcause an upward strain IOO and a slight movement ofthe coil-pipe II. Thestem M is then set downward untill the valve L is seated. When the Waterof condensation enters, this after completely ,filling the main vessel Apours over the top of the float vessel G until that Ills up to, somepredetermined point, preferably nearly to the top. rlhen this vesselsinks by gravity, opening the valve L and permittinga portion of theWater in the float Vessel Gr to escape through the coil-pipe H and thedischarge-pipe J. This discharge goes on until the buoyancy of' thefloat Vessel Gr causes it` to again rise and close the valve.A

L, this operation going on intermittently as water is collected.

The ledges R areto prevent injury t0 the coil-pipe II by forcibledepression of the float vessel G. The float vessel Gr being open is notsubject to external pressure or to the usual derangelnent of inclosedfloats by the entry olf-water underhig-h pressures. The float G restingon the flexible and elastic coil-pipe Hand being,v otherwise wholly outof' contact moves free and with precision.

Having thus explained the natu-re and ohjects of my invention, what Iclaim as new, and desire teseeure by Letters Patent, is-

l. In a steam-trap, a mai-n containing vessel, an open. float vesseltherein, the latter poised and held by a coiled elastic pipe so as tomove vertically without Contact and thereby Operate a valve in itsbottom in the manner and for the purposes substantially as specilied. l

2. In a steam-trap, a main containing Vessel, an open float therein, aflexible dischargepipe on which the float is mounted and with which itcommunicates, an escape-passage in the bottom 'of the float and a fixedvalve that opens and closes by the oai'fs vertical movement,Y arrangedand operating in the manner andforthe purpose substantially asdescribed.3. In a steam-trap the combination of the flexible discharge-pipe H, thefloat G mounted thereon and supported thereby and the stationary stein M"forming a valve to open and close a discharge-passage in the bottom olthe float, operating in the manner and for the purposes substantially asspecified.

In testimony whereof I have signed my name to this specification in. thepresence of two subscribing witnesses.

JOSEPH ST. MARY.

Witnesses 11W. J. LANDER, ELMER WICKES.

